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Finding the Fourth Proportional to 9,251.60, 13,886.10 and 4,872.20

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Solution

The fourth proportional to 9,251.60, 13,886.10 and 4,872.20 is: 7,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,251.60 : 13,886.10 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    9,251.60/13,886.10 = 4,872.20/x
  3. Step 3: Cross multiply
    9,251.60x = 13,886.10 × 4,872.20
  4. Step 4: Simplify right side
    9,251.60x = 67,655,856.42
  5. Step 5: Solve for x
    x = 67,655,856.42/9,251.60
  6. Step 6: Final answer
    x = 7,312.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.